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University of the Pacific Spill Prevention, Control, and Countermeasure (SPCC) Plan Stockton, California Aboveground Fuel Storage Tanks PART 3: Discharge Prevention - General SPCC Provisions The following measures are implemented to prevent petroleum fuel discharges during the handling, use, or transfer of diesel/gasoline fuel products at the University's five diesel generators and 2,000 gallon AST located at the Physical Plant. Physical Plant employees who fuel vehicles from the AST have received training in the proper implementation of these measures. 3.1 Compliance with Applicable Requirements (40 CFR 112.7(a)(2)) Standby Diesel Generators The standby diesel generators use diesel fuel during routine testing and maintenance activities, in addition to use for emergency electrical power generation. They are refueled as necessary by Valley Pacific. Specific procedures are followed by Valley Pacific in the refilling of the AST. These provisions include: 1) the required physical monitoring of the fuel refilling by the driver; 2) the placement of spill mats over the nearby clearly designated storm water drains: and 3) the use of auto shutoff supply nozzle when connected to the AST during AST refilling. The exception to this process is for the AST #1 Magnetek Genesys generator which is located underneath an overhead structure impeding refueling by hose from the tank truck — See Figures A3 — A6 for details. The diesel fuel is hand carried in a five gallon fuel tight container and then carefully poured into the generator's fuel tank. A spill mat is placed over a storm drain that is located on the walkway from the fuel truck to the generator location. University Physical Plant The Physical Plant facility uses an AST equipped with internal secondary containment to prevent the discharge of the entire AST contents. Specific procedures are followed by the diesel/gasoline fuel supplier in the refilling of the AST. These provisions include: 1) the required physical monitoring of the fuel refilling by the driver; 2) the placement of spill mats over the two storm water drains; and 3) the use of auto shutoff supply nozzle when connected to the AST during AST refilling. The AST's internal secondary containment system is believed to meet the specifications provided in EPA's memorandum concerning its policy on double-walled tanks. General containment must be provided to address potential overfills. The careful visual monitoring of the AST refill operations and the placement of spill prevention covers (mats over the storm drain inlets are believed to satisfactory to prevent a discharge in the event of an uncontrolled discharge. An engineering evaluation will be conducted to determine the necessity of installing an oil/water separator between the AST and the closest storm drain inlet. If installed, the separator provides additional environmental protection equivalent to the requirements under 112.8(b)(3) to use ponds, lagoons, or catchment basins to retain diesel fuel at the facility in the event of an uncontrolled discharge. -12- Version 1.0, 11/28/2016